Seinforced batteb



H. S. HAYW/IRDl 1R. REINFOHCED BATTERY BOX.

APPLICATION FILED nic. II. 1912.

lIIIonted July 29,

MMIMIVIIMIWALWNDIVIIUIIVWIIMIWIMIVIIMIVIIMIWWIIMW 1:15:23! I- IIMuIIJIIIIunv resident of Spring Lake,

it may be used for any other HENRY S. HAYN 'l .l JR., 0F SPRING LAKE, 'NEW JERSEY.

REINFORCED BATTERY-BOX.

Specification of Letters Patent.

Patented Jury se, iai-e.

Application filed December 11, 1912. Serial No. 736,097.

To all whom z' may concern: y

Be it known that I, HENRY S. HAYWARD, Jr., a citizen of the United States, and a county of Monmouth, State of New Jersey, have invented certain new and useful improvements in Reinforced Battery-Boxes, of which the following is a specification.

In electric storage batteries, it is necessary that the box or jar containing the electrolyte and the plates, be made of an insulating material, and it has been the custom heretofore to use hard rubber or vulcanite, for this purpose, rather than glass or any other material by reason of its relative lightness and its ability to withstand shocks such as are met With when these batteries are used in vehicles.

In the so-called Edison type of battery, a metal container is sometimes used, but great diiculty has been experienced by reason of electrolytic action upon the exterior of these containers byv reason of moisture, when they are placed together in a battery of a plurality of cells.

The hard rubber or vulcanite ordinarily used is gradually attacked and softened by the electrolyte, which thus causes the rubloer to bend or buckle, and, consequently, the jars to leak. A sudden shock also may cause the hard rubber to crack or break. The object of my invention is to produce a container suitable for this purpose, although purpose to which it may Ibe found suitable, which shall be light, strong, have good insulating qualities and not liable to breakage.

Referring tol the drawing accompanying this specification, 1 have shown at Figure 1 a vertical cross-section of my improved battery box, and at Fig. 2 a horizontal crosssection on the line 2-2 of Fig. 1.

The box consists preferably of a metal reinforcement 1, over which is laid a layer of soft rubber 2, which layer completely in closes the metal reinforcement 1. On top of the layer of soft rubber 2, is a layer of hard rubber or vulcanite 3, which completely incloses the metal reinforcement 1 and soft rubber layer 2. My improved battery box is preferably made as follows: p

ll rst cover the metal reinforcement 1 which is preferably madein the form of a l box, and is relatively thin, with a coating of alloy described inthe Daft application, Serial No. 564,840 now Patent Number 1,120,794 of Dec. 15, 1914. l then cover the metal reinforcement with the soft rubber layer 2, and the hard rubber layer 3, and vulcanize the Whole at one time; r1`he hard and soft rubber layers will be vulcanized together and the soft rubber layer will be vulcanized to the metal reinforcement in the manner described in the said Daft application.

'The purpose of the soft rubber layer 2` is to allow for the difference in the co-eflicients of expansion of the hard rubber layer 3, and the metal reinforcement 1, so that they may expand and contract in a measure independently of each other, the di'erencesl being taken up by the soft rubber layer 2. The soft rubber layer also forms a cushion so that` if the outer hard rubber layer 3 be struck -a blow it will be able to bend inward slightly without; being broken.

1t is evident that l may dispense with the@ outer hard rubber layer, making the soft rubber layer slightly thicker, but 1 prefer to make the outer layer of hard rubber on account of its durability, resistance to punc.

ture and appearance.

While ll have described the preferred form of my invention, it is obvious that other forms may be devised Without departing .fro-m the spirit ofv my invention and li, there, p

to confine myself to that fore do not wish shown and described. What 1 claim and desire to secure by lLetters Patent is 1. lln an article of the class described, a rubber wall comprising ;a layer of hard rubber, a layer of soft rubber attached thereto, and a metal reinforcement attached to the layer of sof-t rubber.

2. 1n an article of the class described, a rubber wall comprising a layer of hard rubber, a layer of soft rubber vulcanized thereto, and a metal reinforcement attached to the layer o-f soft rubber.

3. In an article of the class described, a rubber wall comprising a layer of hard rubber, a layer of soft rubber attached thereto, and a metal reinforcement vulcanized to th layer of soft rubber.

anarticle of the'class described, a completely inclosed by the layer of soft 10` rubberl wall 'comprising a layer of hard rubrubber.

ber, a layer of soft' rubber vulcanized there- In Witness whereof I have hereunto signed to, and a'. metal reinforcement vulcanized to my name inl thelpresence of two Witnesses, 5 the layer of soft rubber. l this 20th day'ofNovember, 1912.

In an article of the class described, a 'HENRY S. HAYWARD, JR.

rub-ber wall comprising a layer of Ahard rub- Witnesses:

ber, a llayer of soft rubber attached thereto, RUTH K. VANRVALEN,

and ametal reinforcement attached to and ARTHUR VHYDLF. 

